The El mod board is pretty good, only thing I hate is there are no parameters to control the momentum. Sucker drifts an extra foot after letting off the throttle (though I put in a 27T motor to get to scale speed not the recommended 55T.) Needs a drag brake setting. Also bring the axle cups out another 1-2mm further than manual states so the dog bones don't fall out on you and you can get full movement for steering. If your interested here's my build thread with observations. Some have been addressed with new parts now shipped with the newer kits.
http://www.rcuniverse.com/forum/rc-t...xing-pics.html